EP0271112A1 - Bouchon à vis inviolable en une seule pièce - Google Patents

Bouchon à vis inviolable en une seule pièce Download PDF

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Publication number
EP0271112A1
EP0271112A1 EP87118386A EP87118386A EP0271112A1 EP 0271112 A1 EP0271112 A1 EP 0271112A1 EP 87118386 A EP87118386 A EP 87118386A EP 87118386 A EP87118386 A EP 87118386A EP 0271112 A1 EP0271112 A1 EP 0271112A1
Authority
EP
European Patent Office
Prior art keywords
screw cap
main body
joint
secondary body
cap according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87118386A
Other languages
German (de)
English (en)
Inventor
Eberhard Thoma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L & N PLAST-KUNSTSTOFFVERARBEITUNG GMBH & CO. BETR
Original Assignee
L & N Plast-Kunststoffverarbeitung & Co Betriebs KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L & N Plast-Kunststoffverarbeitung & Co Betriebs KG GmbH filed Critical L & N Plast-Kunststoffverarbeitung & Co Betriebs KG GmbH
Publication of EP0271112A1 publication Critical patent/EP0271112A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2401/00—Tamper-indicating means
    • B65D2401/45—Windows in external skirts for viewing tamper-element

Definitions

  • the invention relates to an access-safe, one-piece screw cap for containers and in particular bottles, with a lid main body having an internal thread and at least one secondary body, which is connected in one piece in the opening area of the lid main body to the latter by means of a joint, through which the secondary body moves from a starting position can be brought into a position of use, the secondary body being connected to the lid main body by a predetermined breaking point and provided with at least one latching lug with which the secondary body can be locked behind a projection of the container at the end of the screwing-on process in such a way that the predetermined breaking point breaks when unscrewed.
  • Such a screw cap is known from DE-OS 26 21 117.
  • the cover main body and the secondary body if both are made of plastic, in one injection molding process and then the secondary body around the joint into the Use position to fold.
  • the secondary body in its position of use must be welded or glued in an additional operation, provided that one or the other is possible when using the respective material.
  • This welding or gluing point forms the aforementioned breaking point, which should break when the screw cap is unscrewed.
  • this has two major disadvantages.
  • One disadvantage is that the lid is screwed back on and thus the connection, initially invisible, can be restored, with the result that the bottle is ultimately not visible as to whether the screw cap has already been removed.
  • Another major disadvantage is that either the secondary body remains with its joint on the screw cap, or it may have to be torn off in a separate process.
  • This object is achieved in that the joint itself is designed as a predetermined breaking point.
  • This solution has the main advantage that with simple manufacture of the screw cap with main and secondary body not only an automatic swiveling of the secondary body into the position of use is possible in a simple manner, but in particular also ensures that the secondary body after breaking the predetermined breaking point neither on Screw cap still remains on the container, for example a bottle.
  • the intermediate piece of the double joint is designed as a stop part in such a way that it limits the movement of the secondary body into the position of use by the intermediate piece striking a corresponding counter surface of the main body when the position of use is reached. This also ensures that a locking process in the position of use can be initiated more specifically.
  • the joint can be designed as a so-called film hinge. But there is also the possibility of the joint as to form at least one, two or more webs, which themselves act as predetermined fractions.
  • the secondary body is formed as part of an annular body which, in its position of use, rests against an opening edge of the lid main body and is fixed there by a holding connection arrangement such that when the cover main body is unscrewed the predetermined breaking point first breaks and then the holding connection arrangement loosens when the screwing is continued. This ensures that the secondary body is first held in position to ensure that the predetermined breaking point is broken securely. Only then can the secondary body detach itself from its connection to the holding connection arrangement, with the result that the secondary body does not remain in connection with the container or the screw closure at any point.
  • the secondary body is only designed as a tab, preferably as a rectangular tab, which can be placed on the threaded inner wall of the lid main body, it not being absolutely necessary to fix the tab in the position of use, since the Rag always remain facing the inner end wall of the lid main body and therefore the tab or the tab lies against the inside of the lid main body when the screw cap is screwed on.
  • This support also provides sufficient support when the screw cap is unscrewed and a counterforce has to be exerted on the tab when the predetermined breaking point breaks.
  • the tab can preferably be inserted in a recess formed on the inner wall of the main cover body.
  • the tab closes in the use position applied to the inner wall an opening through the lid main body to the outside, so that after tearing off the tab it can be seen immediately that the closure has already been removed.
  • the lid main body and the secondary body are preferably made of plastic. Both parts are preferably injection molded from this plastic in one operation.
  • Such a screw cap can be manufactured largely automatically. This also relates to the movement of the secondary body from its initial position of manufacture to the position of use.
  • FIG. 1a A first embodiment of an access-safe, one-piece screw cap is shown in section in Fig. 1a.
  • the screw cap mainly consists of a lid main body (14) provided with an internal thread (10) and sealing lips (12) and a secondary body (16) which is attached in the opening area (18) of the screw cap. 1a, the screw cap (14) is shown in connection with the immediate opening area (20) of a bottle (22) which is only partially shown, the internal thread (10) of the screw cap (14) being connected to an external thread (24) of the opening area (20 ) the bottle (22) is screwed on.
  • FIG. 1a an articulation of the secondary body (16) with the lid main body (14) is shown, in which the secondary body (16) is attached to the free opening edge (28) of the lid main body (14) via a hinge (26) only indicated schematically and that Joint (26) is designed as a predetermined breaking point.
  • the secondary body (16) in its position of use, is shown in section at the height of a locking lug (36).
  • the secondary body (16) is shown as it is articulated on the cover main body (14) by means of an intermediate piece (52) and a joint (32), the secondary body (16) being connected via a further joint (34 ) is connected to the intermediate piece (52).
  • This embodiment variant will be explained in more detail later with reference to FIGS. 1e and 1f.
  • a single joint can also be formed.
  • Fig. 1b shows schematically a side view of the screw cap, as it looks immediately after injection molding, if the screw cap is made of plastic.
  • the secondary bodies (16) protrude radially and diametrically outwards approximately in the opening plane of the screw cap, so that simple demolding is possible in this sprayed state.
  • the secondary body is provided with a holding connection arrangement which consists of a locking projection (40) on the side of the secondary body and a locking recess (42) from the side of the lid main body (14).
  • two secondary bodies are provided symmetrically and diametrically opposite one another, although basically only one such secondary body is necessary.
  • the secondary bodies (16) are designed as semicircular ring bodies which rest on or in the opening edge (44) of the lid main body (14), as shown in Fig. 1a, when the secondary bodies according to those in Fig. 1b arrows A are pivoted.
  • the latches (36) already mentioned are located as shown.
  • Recesses (47) are located at the point on the outside of these ring bodies which is radially facing away from these locking lugs (36).
  • the locking lugs (36) of the secondary body (16) slide over an inclined surface (46) of the shoulder (38) of the bottle (22) towards the end of the screwing process.
  • a recess (48) (right side of FIG. 1a), which is closed to the outside, or a continuous opening (50) (left side in FIG. 1a) , which is open to the outside to make the secondary body visible from the outside.
  • the secondary body with its locking lug (36) can slide radially outwards when sliding along the inclined surface (46) of the shoulder (38) and then snap into the locking position shown in FIG. 1a in the final state.
  • the shoulder (38) of the bottle (22) strives to prevent this since the locking projections (36) cannot slide over the shoulder (38). Since also the Holding connection in the area of the locking projection (40) and the locking recess (42) is dimensioned stronger than the predetermined breaking point provided at the joint (26 or 32 and 34), breaks the joint at a certain effort and a certain unscrewing of the screw cap, so that the Secondary body is detached from the main lid body at this point.
  • the holding connection arrangement in the area of the latching projection (40) and the latching recess (42) is released, so that secondary bodies (16) completely detach from the lid main body (14). If the secondary body is provided on one side, it does not get caught on the bottle itself. When the secondary body is arranged on both sides, both parts fall off the bottle, since the secondary body is divided as such.
  • FIGS. 2a to 2e Another embodiment variant results from FIGS. 2a to 2e. It is a representation similar to that in Fig. 1a. However, here the secondary body (16c) consists of a flap attached on one side in the form of a rectangular flap, and of course several such secondary bodies (16c) can be provided distributed over the circumference.
  • This secondary body (16c) like the secondary body (16), is injection molded in one piece with the cover main body (14) made of plastic, the secondary body (16c) also protruding here in the radial manner shown in FIG. 1b. This is shown schematically in Fig. 2d and (2e). The secondary body (16c) is folded in according to the arrow B in FIG.
  • the auxiliary body (16c) not having to lie in a recess (43) in the cover main body (14) before screwing on, but only when the screwing-on process takes place and then the secondary body (16) presses into this recess (43).
  • the snap-in process when the screw cap is screwed on takes place in a manner similar to that in the first embodiment shown in FIG. 1.
  • the secondary body (16c) is initially supported on the shoulder (38) of the bottle and therefore cannot escape, although in this position it is not connected or detachably connected to the lid main body in this area.
  • the secondary body (16c) falls in the direction of arrow C as shown in Fig. 2c and thus detaches from the screw cap as well from the bottle. This is a first reliable indicator that the bottle has already been opened once when the secondary body (16c) is missing.
  • the secondary body (16c) can be provided with a visible surface S, which is visible through the window (50).
  • This intermediate piece (52) is connected to the cover main body (14) via a joint (32) and to the secondary body (16c or 16) via a joint (34).
  • the intermediate piece (52) forms a stop surface (53) which, in the end position shown in FIGS. 2g and 1f, comes to rest against a stop surface (55) of the cover main body (14).
  • the consequence of this is that the joint does not have to be deformed too much in the direction of arrow B or A even for the pivoting-in process of the secondary body (16c or 16), so that on the one hand, excessive forces are not already exerted on the pivoting into the end position
  • the predetermined breaking point is applied and, on the other hand, there is no excessive back-turning behavior of the secondary body when swung in. Last but not least, it is also ensured that the secondary body can more easily get into the specific, defined end position when swiveling in, without having to adhere to particularly tight tolerances.
  • the articulation point (32) is preferably designed as a predetermined breaking point so that the intermediate piece does not get caught on the lid main body.
  • the predetermined breaking point can also be provided at the articulation point (34), so that in any case the intermediate piece (52) sticks as a visible indicator without an auxiliary body, since it is very it will be difficult to reconnect the secondary body to the intermediate piece if one intends to close the already opened bottles together with the secondary body.
  • the secondary bodies (16c and 16) are attached to the lid main body (14) in different orientations when the injection-molded state is considered. This is because the secondary bodies are shaped differently curved to match the lid main body.
  • the secondary body (16c) is concave on the inside to match the curvature of the side wall of the lid main body.
  • This concave recess is identified in FIG. 2f by the reference symbol (56).
  • the injection molded object is easier to demold.
  • the concavity (57) is present with an axis rotated by 90 °, so that the position of the secondary body (16b) relative to the lid main body (14) shown in Fig. 1e allows easier removal from the mold of the injection molded article.
  • Fig. 3a to 3c the process is shown in three stages from right to left, by which the secondary body (16) according to the arrows A in Fig. 1b, the secondary body (16) are pivoted into their position of use.
  • the reference number (64) denotes an ejection device belonging to the injection molding machine with a plunger (66). In the position shown in Fig. 3a, the plunger sits firmly but releasably in the main cover body (14), favored by the projections (68) in the main cover body.
  • the ejection process from the injection molding machine in the direction of arrow (D) is used to push the injection-molded screw cap with the closed end ahead through an opening (61) of a die (60), the opening being defined by claws (62 that can be moved radially and spring-loaded) ) is formed.
  • the claws (62) are pressed radially outwards.
  • the closing claws (62) Towards the end of the pushing-through process of the screw cover through the opening (61), the closing claws (62), leaving an opening that is smaller than the diameter of the screw cover, bring the secondary bodies (16) into the position shown in FIG. 3b. Then the plunger (66) is withdrawn as shown in Fig.
  • FIGS. 4a to 4d A similar process is shown in FIGS. 4a to 4d for the embodiment according to FIG. 2.
  • the claws (62a and 62b) are shown here pivotable about axes (63), different claws (62a and 62b) being provided.
  • the claw (62b) is assigned to the secondary body (16c), so that this claw (62b) 4b and 4c brings the secondary body (16c) into the position shown in FIG. 4c when the plunger (66) has pushed the screw cap completely through the opening (61) of the die (60).
  • the claw (62b) is provided with an elongated tongue (62c) which then brings the secondary body (16c) into the interior of the cover main body (14) into the end position according to FIG. 4d when the plunger (66) in the direction of arrow F 4d is withdrawn, and the opening edge (44) abuts the claws (62a) and (62b) moved back again from below.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Closures For Containers (AREA)
EP87118386A 1986-12-12 1987-12-11 Bouchon à vis inviolable en une seule pièce Withdrawn EP0271112A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3642582 1986-12-12
DE19863642582 DE3642582A1 (de) 1986-12-12 1986-12-12 Zugangssicherer einteiliger schraubdeckel

Publications (1)

Publication Number Publication Date
EP0271112A1 true EP0271112A1 (fr) 1988-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118386A Withdrawn EP0271112A1 (fr) 1986-12-12 1987-12-11 Bouchon à vis inviolable en une seule pièce

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EP (1) EP0271112A1 (fr)
DE (1) DE3642582A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085279A1 (fr) * 2003-03-24 2004-10-07 Fabri-Plast S.A. Bouchon a conteneur pour dessechant
EP2666730A1 (fr) * 2012-05-23 2013-11-27 Stella Kunststofftechnik GmbH Capuchon de fermeture avec bague d'inviolabilité
CN114555311A (zh) * 2019-11-21 2022-05-27 利萨·德雷克塞迈尔有限责任公司 具有至少一个集成的附件的一体的铸造构件以及用于制造铸造构件的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606358U1 (de) * 1996-04-06 1996-08-29 Metallwaren-Fabrik GmbH, 42499 Hückeswagen Flaschenverschluß aus Kunststoff
SE529720C2 (sv) * 2006-03-10 2007-11-06 Tetra Laval Holdings & Finance Metod att tillverka en förpackning
DE102007051022A1 (de) * 2007-10-25 2009-04-30 Bayerische Motoren Werke Aktiengesellschaft Befüllanschluss für eine Fahrzeug-Klimaanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310932A1 (fr) * 1975-05-14 1976-12-10 Alca Sa Bouchon a vis inviolable en une seule piece de matiere thermoplastique
FR2439140A1 (fr) * 1978-10-17 1980-05-16 Bouchons Plastiques Perfectionnements aux dispositifs de bouchage a vis
FR2525565A1 (fr) * 1982-04-23 1983-10-28 Cebal Capsule de bouchage a vis, en plastique, a bande d'inviolabilite perfectionnee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310932A1 (fr) * 1975-05-14 1976-12-10 Alca Sa Bouchon a vis inviolable en une seule piece de matiere thermoplastique
FR2439140A1 (fr) * 1978-10-17 1980-05-16 Bouchons Plastiques Perfectionnements aux dispositifs de bouchage a vis
FR2525565A1 (fr) * 1982-04-23 1983-10-28 Cebal Capsule de bouchage a vis, en plastique, a bande d'inviolabilite perfectionnee

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004085279A1 (fr) * 2003-03-24 2004-10-07 Fabri-Plast S.A. Bouchon a conteneur pour dessechant
EP2666730A1 (fr) * 2012-05-23 2013-11-27 Stella Kunststofftechnik GmbH Capuchon de fermeture avec bague d'inviolabilité
CN114555311A (zh) * 2019-11-21 2022-05-27 利萨·德雷克塞迈尔有限责任公司 具有至少一个集成的附件的一体的铸造构件以及用于制造铸造构件的方法

Also Published As

Publication number Publication date
DE3642582A1 (de) 1988-06-23
DE3642582C2 (fr) 1989-04-13

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